3 ms·

How do photons mediate both attraction and repulsion?

4 points by westurner 2y ago

westurner 2y ago
Additional recent findings in regards to photons (and attraction and repulsion) from the past few years: "Scientists discover laser light can cast a shadow" https://news.ycombinator.com/item?id=42231644 https://news.ycombinator.com/item?id=42231644 : - "Shadow of a laser beam" (2024) https://opg.optica.org/optica/fulltext.cfm?uri=optica-11-11-1549&id=563468 https://opg.optica.org/optica/fulltext.cfm?uri=optica-11-11-... - "Quantum vortices of strongly interacting photons" (2024) https://www.science.org/doi/10.1126/science.adh5315 https://www.science.org/doi/10.1126/science.adh5315 - "Ultrafast opto-magnetic effects in the extreme ultraviolet spectral range" (2024) https://www.nature.com/articles/s42005-024-01686-7 https://www.nature.com/articles/s42005-024-01686-7 .. https://news.ycombinator.com/item?id=40911861 https://news.ycombinator.com/item?id=40911861 - 2024: better than the amplituhedron (for avoiding some Feynmann diagrams) .. "Physicists Reveal a Quantum Geometry That Exists Outside of Space and Time" (2024) https://www.quantamagazine.org/physicists-reveal-a-quantum-geometry-that-exists-outside-of-space-and-time-20240925/ https://www.quantamagazine.org/physicists-reveal-a-quantum-g... : - "All Loop Scattering As A Counting Problem" (2023) https://arxiv.org/abs/2309.15913 https://arxiv.org/abs/2309.15913 - "All Loop Scattering For All Multiplicity" (2023) https://arxiv.org/abs/2311.09284 https://arxiv.org/abs/2311.09284 And then gravity and photons: - "Deflection of electromagnetic waves by pseudogravity in distorted photonic crystals" (2023) https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.033522 https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.0... - "Photonic implementation of quantum gravity simulator" (2024) https://www.spiedigitallibrary.org/journals/advanced-photonics-nexus/volume-3/issue-03/036011/Photonic-implementation-of-quantum-gravity-simulator/10.1117/1.APN.3.3.036011.full https://www.spiedigitallibrary.org/journals/advanced-photoni... .. https://news.ycombinator.com/item?id=42506463 https://news.ycombinator.com/item?id=42506463 - "Graviton to Photon Conversion via Parametric Resonance" (2023) https://arxiv.org/abs/2205.08767 https://arxiv.org/abs/2205.08767 .. "Physicists discover that gravity can create light" (2023) https://news.ycombinator.com/item?id=35633291#35674794 https://news.ycombinator.com/item?id=35633291#35674794 What about the reverse; of gravitons produce photons, can photons create gravity?
- westurner 2y ago
  - "Physicists Magnetize a Material with Light" (2025) https://news.ycombinator.com/item?id=42628841 https://news.ycombinator.com/item?id=42628841
- westurner 2y ago
  - "Experimental evidence that a photon can spend a negative amount of time in an atom cloud" (2024) https://www.nature.com/articles/35018520 https://www.nature.com/articles/35018520 .. https://www.impactlab.com/2024/10/13/photons-defy-time-new-quantum-study-shows-light-can-exit-before-entering/ https://www.impactlab.com/2024/10/13/photons-defy-time-new-q... ; Rubidium - "Gain-assisted superluminal light propagation" (2000) https://www.nature.com/articles/35018520 https://www.nature.com/articles/35018520 ; Cesium
- westurner 2y ago
  - "Exact Quantum Electrodynamics of Radiative Photonic Environments" (2024) https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.133.203604 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.13... .. "New theory reveals the shape of a single photon"
- westurner 2y ago
  - "All-optical complex field imaging using diffractive processors" (2024) https://www.nature.com/articles/s41377-024-01482-6 https://www.nature.com/articles/s41377-024-01482-6 .. "New imager acquires amplitude and phase information without digital processing" (2024) https://www.google.com/amp/s/phys.org/news/2024-05-imager-amplitude-phase-digital.amp https://www.google.com/amp/s/phys.org/news/2024-05-imager-am... - "Bridging coherence optics and classical mechanics: A generic light polarization-entanglement complementary relation" (2023) https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.5.033110 https://journals.aps.org/prresearch/abstract/10.1103/PhysRev... : > More surprisingly, through the barycentric coordinate system, optical polarization, entanglement, and their identity relation are shown to be quantitatively associated with the mechanical concepts of center of mass and moment of inertia via the Huygens-Steiner theorem for rigid body rotation. The obtained result bridges coherence wave optics and classical mechanics through the two theories of Huygens.

4 points by westurner 2y ago

Additional recent findings in regards to photons (and attraction and repulsion) from the past few years: "Scientists discover laser light can cast a shadow" https://news.ycombinator.com/item?id=42231644 https://news.ycombinator.com/item?id=42231644 : - "Shadow of a laser beam" (2024) https://opg.optica.org/optica/fulltext.cfm?uri=optica-11-11-1549&id=563468 https://opg.optica.org/optica/fulltext.cfm?uri=optica-11-11-... - "Quantum vortices of strongly interacting photons" (2024) https://www.science.org/doi/10.1126/science.adh5315 https://www.science.org/doi/10.1126/science.adh5315 - "Ultrafast opto-magnetic effects in the extreme ultraviolet spectral range" (2024) https://www.nature.com/articles/s42005-024-01686-7 https://www.nature.com/articles/s42005-024-01686-7 .. https://news.ycombinator.com/item?id=40911861 https://news.ycombinator.com/item?id=40911861 - 2024: better than the amplituhedron (for avoiding some Feynmann diagrams) .. "Physicists Reveal a Quantum Geometry That Exists Outside of Space and Time" (2024) https://www.quantamagazine.org/physicists-reveal-a-quantum-geometry-that-exists-outside-of-space-and-time-20240925/ https://www.quantamagazine.org/physicists-reveal-a-quantum-g... : - "All Loop Scattering As A Counting Problem" (2023) https://arxiv.org/abs/2309.15913 https://arxiv.org/abs/2309.15913 - "All Loop Scattering For All Multiplicity" (2023) https://arxiv.org/abs/2311.09284 https://arxiv.org/abs/2311.09284 And then gravity and photons: - "Deflection of electromagnetic waves by pseudogravity in distorted photonic crystals" (2023) https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.033522 https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.0... - "Photonic implementation of quantum gravity simulator" (2024) https://www.spiedigitallibrary.org/journals/advanced-photonics-nexus/volume-3/issue-03/036011/Photonic-implementation-of-quantum-gravity-simulator/10.1117/1.APN.3.3.036011.full https://www.spiedigitallibrary.org/journals/advanced-photoni... .. https://news.ycombinator.com/item?id=42506463 https://news.ycombinator.com/item?id=42506463 - "Graviton to Photon Conversion via Parametric Resonance" (2023) https://arxiv.org/abs/2205.08767 https://arxiv.org/abs/2205.08767 .. "Physicists discover that gravity can create light" (2023) https://news.ycombinator.com/item?id=35633291#35674794 https://news.ycombinator.com/item?id=35633291#35674794 What about the reverse; of gravitons produce photons, can photons create gravity?

westurner 2y ago
- "Physicists Magnetize a Material with Light" (2025) https://news.ycombinator.com/item?id=42628841 https://news.ycombinator.com/item?id=42628841
westurner 2y ago
- "Experimental evidence that a photon can spend a negative amount of time in an atom cloud" (2024) https://www.nature.com/articles/35018520 https://www.nature.com/articles/35018520 .. https://www.impactlab.com/2024/10/13/photons-defy-time-new-quantum-study-shows-light-can-exit-before-entering/ https://www.impactlab.com/2024/10/13/photons-defy-time-new-q... ; Rubidium - "Gain-assisted superluminal light propagation" (2000) https://www.nature.com/articles/35018520 https://www.nature.com/articles/35018520 ; Cesium
westurner 2y ago
- "Exact Quantum Electrodynamics of Radiative Photonic Environments" (2024) https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.133.203604 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.13... .. "New theory reveals the shape of a single photon"
westurner 2y ago
- "All-optical complex field imaging using diffractive processors" (2024) https://www.nature.com/articles/s41377-024-01482-6 https://www.nature.com/articles/s41377-024-01482-6 .. "New imager acquires amplitude and phase information without digital processing" (2024) https://www.google.com/amp/s/phys.org/news/2024-05-imager-amplitude-phase-digital.amp https://www.google.com/amp/s/phys.org/news/2024-05-imager-am... - "Bridging coherence optics and classical mechanics: A generic light polarization-entanglement complementary relation" (2023) https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.5.033110 https://journals.aps.org/prresearch/abstract/10.1103/PhysRev... : > More surprisingly, through the barycentric coordinate system, optical polarization, entanglement, and their identity relation are shown to be quantitatively associated with the mechanical concepts of center of mass and moment of inertia via the Huygens-Steiner theorem for rigid body rotation. The obtained result bridges coherence wave optics and classical mechanics through the two theories of Huygens.